python按键按住不放持续响应的实例代码

import pygameimport timefrom pygame.locals import * # 用来检测事件，比如键盘按键操作class Hero(BasePlane):  """定义我方飞机类"""  def __init__(self, screen, enemy_temp):    BasePlane.__init__(self, 140, 488, screen, "./spritesheets/hero_fly_1.png") # 继承飞机基类，这里不用管    self.enemy = enemy_temp     # 设置上下左右四个属性    self.key_right_status = False    self.key_left_status = False    self.key_up_status = False    self.key_down_status = False   # 以下方法是控制上下左右移动  def move(self):    if self.key_right_status:      self.x += 3    if self.key_left_status:      self.x -= 3    if self.key_down_status:      self.y += 3    if self.key_up_status:      self.y -= 3def key_control(hero_temp):  """控制键盘的函数"""  for event in pygame.event.get():    # 判断是否是点击了退出按钮    if event.type == QUIT:      print("exit")      exit()    # 在按下键盘时，设置hero的属性为True    elif event.type == KEYDOWN:      if event.key == K_a or event.key == K_LEFT:        hero_temp.key_left_status = True       elif event.key == K_d or event.key == K_RIGHT:        hero_temp.key_right_status = True      elif event.key == K_w or event.key == K_UP:        hero_temp.key_up_status = True      elif event.key == K_s or event.key == K_DOWN:        hero_temp.key_down_status = True      elif event.key == K_SPACE:        hero_temp.shoot() # 这里应该是飞机.显示子弹方法（）    elif event.type == KEYUP:      if event.key == K_a or event.key == K_LEFT:        hero_temp.key_left_status = False        # 检测按键是否是d或者方向键right      elif event.key == K_d or event.key == K_RIGHT:        hero_temp.key_right_status = False      elif event.key == K_w or event.key == K_UP:        hero_temp.key_up_status = False      elif event.key == K_s or event.key == K_DOWN:        hero_temp.key_down_status = Falsedef main():  # 1.创建一个窗口，用来显示内容  screen = pygame.display.set_mode((320, 568), 0, 32)  # 2.创建一个跟窗口大小一致的图片，用来填充当背景  background = pygame.image.load("./spritesheets/background_2.png")  enemy = Enemy(screen)  hero = Hero(screen, enemy) # 创建我方飞机英雄对象  while True:    # 设定需要显示的图在窗口中哪个位置显示    screen.blit(background, (0, 0))    # 我方飞机英雄显示    hero.display()    # 敌方飞机显示    enemy.display()    enemy.move()    enemy.shoot()    # 获取事件，比如按键等    key_control(hero)    hero.move()    # 更新需要显示的内容    pygame.display.update()    time.sleep(0.01)if __name__ == '__main__':  main()